Wiring tester unit



FIG. 1 shows a top plan view of our new design;

FIG. 2 shows a rear side elevation view thereof;

FIG. 3 shows a front elevation view thereof;

FIG. 4 shows a right side elevation view thereof;

FIG. 5 shows a left side elevation view thereof; and,

FIG. 6 shows a bottom plan view thereof.

The ornamental design for a wiring tester unit, as shown and described.